Red Sea, Egypt

“The diving in the Red Sea, especially around the Dahab and Blue Hole area, stands out for its amazing visibility and ease of access,” says travel blogger Michael Hodson, an avid diver who pens the blog (Go, See, Write). “Almost all dives in that area are walk-ins, visibility is regularly 20 to 30 meters, and the color and variety of the underwater life is spectacular because the coral is still in excellent condition.” This is explained by the Red Sea’s geographic location: Nearly surrounded by desert, the waters retain fairly consistent temperatures and salinity levels, and the lack of run-off from rain, rivers, or any other sources of fresh water provide crystal clear waters for exploring its reefs, wrecks, and depths.